Demountable rim



T.G. GERDINE.

` nEMouNTABLE RIM.

APPLICATION FILED AUG. 2| i920.

1,392,009, l PatentedSept 27,1921.A

2 SHEETS-SHEET 1.

gwuwntoz G. Genome.

DEMOUNTABLE RIM.

APPucATloN FILED Auei 2. 1920.

2 SHEETS-SHEET 2.

plesof my invention.

`Rims, of which the vdemountable rim,

. boltsfor thering, tpositlon. ---'Fig. 3 is a detail view showlng one of the AUNITiazD STATES PATENT OFFICE' y'rrioizuis G. creatinina, 0F WEs'r FALLS CHURCH, viRGrNrA.

DEMOUNTABLE RIM.

To all whom t may` concern.'

Be it knownthat I, THOMAS G. GERDINE,

a citizen of the United States, residing at West FallsChurch, county of Fairfax, and

IState of Virgima, lhave invented certain new and-useful Improvements in Demountable following is a full and clear description. t

The invention contemplates an improved designed particularly for the purposeof providing a fastening device for the rim and tire of automobile and other vehicle wheels, by means of which the tire may be quickly secured in place on the wheel and effectively retained thereon, andmay,

with equal facility be unfastened for the purpose of demounting the tire.

The invention consists in certainy novel combinations and arrangements of parts involving: a single expansible and contractible .ring carried by the felly yof a'wheel, Aand a --plurality of latches orvlockinglugs co-acting 7 with the rim ofthe wheelV and carried `by said ring,.for retaining the rim and tire in locked position on the felly of the wheel, asy will be hereinafter pointed out and claimedz"v ..1

In the accompanying drawings I have illustrated one complete examplev of the physical yembodiment of my invention involvlng a locking ring and locking lugs orv latches and their connections, in which the parts are combined and arranged according toi the best mode I have thus far devised for the practical application of the princi- Figure l is a side view showing an automobile, wheel equipped with the deviceof Vmy invention. l Y

Fig.f2 is an enlarged, transverse sectional vview' through the wheel tire and felly illustrating 'one ofthe locking lugs or latches, the tension ring, and one of thevsupporting the parts being iny locked latches in unlocke the rim. Y

.Fig.. 4 :is a detail, longitudinal sectional view ofthe tension device or turn buckle connecting the ends o-f the tension ring.

Fig. 5 is a plan view of a locking lug, supporting latch-bolt, and part of the lockposition for demounting ing 0,1" 'tensor ring,

Specification of Letters Patent.

Patented sept. 27, 192i.

Application led August 2, 1920. kSerial No.y 400,731.

Fig. 6 is a detail sectional view at line 6 6 of F 1g. 2. l

Fig. 7 is a View similar `.to figure 6 with the tension ring and bolt-head removed.

Fig. 8 is a detail, transverse sectionalview of one of the latchesfor lugs. i

In the preferred form of my invention as illustrated in the drawings Ihave shown a standard form of wheel including thetire casing l, inner tube 2, metal rim 3, and side plate 4 of kusual or ysuitable construction, used in combination with the usual wood felly 5 of the wheel, and forming part of a tI'S v-: Y.

In converting the wheel ,for use withv my invention I employ a number of spaced,

transversely disposed bolts 6 that are well known type of'demoun'table'rim and utilized-to secure the side platee to the felly. These bolts the felly and have riveted or upturned heads for retaining the sideplates, while at their 4opposite ends the boltsly are vfashioned with longitudinal aXis of the bolts. The required number of* these bolts are utilized and spaced at proper intervals aboutV the ywood felly, and the Teheads project *a pass transversely through i T-heads 8 projecting4 atright angles to `the f..

suitable 'distance from the side off the felly to permit attachment to each bolt of a locking latch' or lug indicated as a whole by the numeral 9.

Inasmuch as the bolts and, latches are standardized andv of common or similar construction, a description offa bolt anda lug or latch will-beA suiiicient for all of them. To accommodate the bolt, the latch isprovided with a transversely extending groove l0 of proper dimensions to receive that portion of the bolt near its T-head, and the AT-head of the bolt is fitted or journaled in the bolt'by fitting theL position the 111g is freete Oscillate Q11 the head with the recesses as a bearing, and it will readily be apparent that the lugs may also be withdrawn from the T-heads of the bolts with facility, by withdrawing therei cessed lugl from the T-head.

These pivotally supported latches or lugs carry or support a divided metal ring or band 12, and each latch is fashioned with a longitudinally extendingopening 13 to rcceive the ring, which may be termed a tension ring. The openings v13 have double tapered walls,'outwardly flaring from both sides of the center, to permit relative movement of the latches on the ring when fasten-v ing or unfastening the rim on the felly of the wheel.

The tension ring-ispassedl through the several latches, or the, latches may be slipped, successively, over the ends of the divided ring, which ends are connected by a turn-buckle or tension device comprising the two threaded sections 14C and 15. Various means may be utilized for connecting the two ends of the tension ring, one of which is indicated in Fig. Ll', wherein the ends of the divided ,ring are provided with an annular groove 16 to form a rounded extremity or head 17. Within the tapered or conical end openings`18'ofv the turn-buckle sections are seated complementary thimbles 19, toform effective connection sleeves between the turn buckle sec-4 tions and the divided ends of the tension ring. Thus it will be apparent thatV the threaded head on section 14 may be turned in the threaded socket on section 15 of the turn buckle, in order that the circumference and diameter of the divided ring may be increased or decreased.

If desired a cotter pin 2O mayl be passed through registering openings in the two threaded sections of the turn buckle to pre' vent relative movement of theseparts after they have been adjusted. The pinproje'cts sufficiently beyond the periphery of the buckle to encounter the felly of the wheel and thus prevent turning of the locked sections.

Preferably an annulus or metal ring 22 angular in cross section is fixed at the outer edge of the wood felly, as a wear ring, and an additional wear ring or filler-ring 21 is located between the flared edge of the metal rim and this wear ring. The bearing edge 23 of each ofthe latches or lugs engages against these wear and filler rings to retain the rim in position.

The pivotal support of the lugs on the divided tension ring is relatively fixed, and these supports are spaced in alinement around the felly at the side thereof. lThe lugs are adapted to oscillate on their pivot supports to swing the ring toward or away from the felly and rim. Thus, v'inv mounting the rim on the felly, with the tire, rim,

side plate, and filler ring in proper position, the sections of the turn buckle are turned to extend the length of the buckle and thus`v lengthen ring sufficiently to permit the ring to be swung, through the oscillatable latches pivoted on the T-heads as a center, over the heads as a center, until the bearing portions of the lug'encounter the `filler ring, rim and wear ring of the felly. Now the ringis` shortened by turning the threaded sections of the turn buckle to decrease the diameter `of the ring, and by Vthis action the'several lugs or latches are caused to turn down toward the wheelvinto close frictional contact Awith the rim, filler ring and wear ring, thus locking the tire within the rim.' To demountth'e rim, the buckle is loosened and the ring lengthened sufficiently to permit it to swing away from the wheel, and over ,the alined T-'heads if" desired. Then Vthe filler ring and rim may be displaced and the rim dismounted.

1. The combination with a wheel rim and felly, of an extensible andcontractible 1annulus, a plurality of latches pivotally supported on said wheel, and connections between said latches and annulus whereby the former maybe forced into locking position with relation to the rim. Y f

- 2. The combination withl av wheel and its demountable riin, vofa divided ring and a,

turn buckle connecting its ends, a plurality vof latches, fixed bolts on the wheel for pivv otally 1 supporting said' latches and connections between said ring and latches whereby the latches,5by action ofthe turn buckle, may be forced into locking position'with relation to said rim.

` 3. The 'combination with a wheel and itsA demountable rim, of a divided ring and extensible coupling'ineniber, a series of latches vcarried by said ring havingv frrooves and recesses, and fixed bolts on the wheel each having a Tshead for pivotally supporting said-latches.

il. Thecombination in a fastening ydevice for a demountable tire-rim with a tension annulus, of'a series of transverse bolts supported in a wheel and each fashioned with a T-head, and a seriesof latches-carried byY scribed.

THOMAS G. GERDINE. 

